Environmental risk for application of ammonia-soda white mud in soils in China

文献类型： 外文期刊

第一作者： Wang Xiao-bin

作者： Wang Xiao-bin;Yan Xiang;Li Xiu-ying

作者机构：

关键词： environmental safety risk; heavy metals; industrial solid wastes; ammonia-soda white mud; ammonia-soda residue

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2020 年 19 卷 3 期

页码：

收录情况： SCI

摘要： In recent years, some reports, mainly from Chinese research, show that there has been an increasing trend in the use of ammonia-soda residue (ASR) (or called ammonia-soda white mud) as a soil conditioner in farmlands. Up to now, the studies on ASR have focused on its utilization for acid soil amendment in agriculture, but few studies have assessed its environmental risk. ASR contains pollutant elements such as mercury (Hg), cadmium (Cd), copper (Cu) and fluorine (F) and the purpose of this study was to review research on the environmental impacts of ASR application in agriculture. Observations obtained from 23 research reports indicate that the concentrations of Hg, Cd, Cu, F and CI (0-170, 0.01-2.8, 4.5-200, 2000-24700 and 1 600-188 000 mg kg(-1), respectively) in ASR may exceed the limits (<= 0.5, <= 0.3 and <= 50 mg kg(-1) for Hg, Cd and Cu, respectively) of Chinese Risk Screening Values for Soil Contamination of Agricultural Land (GB 15618-2018 2018) or the refereed critical value (<= 800 and <= 200 mg kg(-1) for F and CI, respectively) based on Chinese research. The concentrations of the elements Hg, Cd, Cu, F and CI in the leachate of ASR detected by the extraction tests also exceed the limits (Class IV-V) of the Chinese Standard for Groundwater Quality (GB/T 14848-2017 2017). Based on the above results, it is suggested that ASR without any pretreatment for reducing harmful pollutants should not be used for soil remediation or conditioning of farmlands, to ensure soil health, food safety and environmental quality.

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